why do i feel tired after my b12 injection How Long Does It Take to Recover from Vitamin Deficiency? B12 Shots at Home: How,

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10.1111/j.0954-6820.1968.tb02452.x [DOI] [PubMed] 51.Chapman LE, Darling AL, Brown JE (2016) Association between metformin and vitamin B12 deficiency in patients with type 2 diabetes: a systematic review and meta-analysis

N Z Med J 129 [PubMed] 16.Kotilea K, Quennery S, Decros V, Hermans DA (2014) Successful sublingual cobalamin treatment in a child with short-bowel syndrome

Seek emergency medical attention immediately if you experience more severe symptoms, such as difficulty breathing, dizziness, or swelling of the face or throat, as these could be signs of a serious allergic reaction (anaphylaxis)